Short-range magnetic field system
a magnetic field and short-range technology, applied in the direction of loop antennas, transmission, antenna couplings, etc., can solve the problems of limited number of users who are able to use the electrical outlets, limited number of physical electrical outlets in the area such as the conference room and coffee shop, and the small amount of power consumption, so as to enhance the data transmitting rate and data reliability, and reduce the complexity of the system
Active Publication Date: 2017-03-23
DAEGU GYEONGBUK INST OF SCI & TECH
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- Application Information
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Benefits of technology
The present invention provides a short-range magnetic field system that uses a MIMO structure to enhance data transmission and reliability, and reduces the complexity of the system. The system is applicable to various communication and power transmitting scenarios, including underwater, underground, and human implantable devices. Additionally, the system is secure against electromagnetic wave jamming or signal wiretapping, and simultaneously performs communication and wireless power transmission for transportation.
Problems solved by technology
Similarly, the magnetic field communication technology may have a communication range wider than that of near field communication (NFC) technology and radio frequency identification (RFID) technology and consume a small amount of power.
Secondly, in terms of practicality, as number of physical electrical outlets to be used in the area such as the conference room the coffee shop, and the waiting area at the airport may be limited.
Thus, a number of users who are able to use the electrical outlets may be also limited.
Thirdly, in terms of penetrability, a wireless power may penetrate through various objects such as a tree, plastic, paper, and fabric.
Method used
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[0051]Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout. The embodiments are described below in order to explain the present invention by referring to the figures.
[0052]FIG. 1 is a diagram illustrating a short-range magnetic field system according to an embodiment, and FIG. 2 is a diagram illustrating a quadrupole antenna included in a short-range magnetic field system according to an embodiment.
[0053]Referring to FIG. 1, a short-range magnetic field system 10 includes a transmission antenna array 100 and a reception antenna array 200.
[0054]The transmission antenna array 100 may be disposed on a transmission end (not shown).
[0055]In addition, the transmission antenna array 100 may include a plurality of transmission antennas.
[0056]For example, the transmission antennas include a first transmission antenna 110 and a second t...
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A short-range magnetic field system according to an embodiment includes a transmission antenna part located at a transmission port; and a reception antenna part located at a reception port to face the transmission antenna part. wherein a magnetic field formed around the transmission antenna part or the reception antenna part can be offset.
Description
TECHNICAL FIELD[0001]The present invention relates to a short-range magnetic field system, and more particularly, to a short-range magnetic field system for disposing heterogeneous antennas to offset a magnetic field formed around a transmission antenna array or a reception antenna array.BACKGROUND ART[0002]A short-range magnetic field system is associated with short-range wireless contact standards including Erma 340 and ISO / IEC 18092 that use magnetic induction between neighboring devices to establish communication in all directions.[0003]For example, the short-range magnetic field system may transmit data at a data rate up to 424 kilobits per second (Kbps) within a range of 20 centimeters (cm) using a frequency of 13.56 megahertz (MHz), and may be used to make a payment and to download content to a mobile device such as a cellular phone and through a wireless broadband internet (WiBro).[0004]Magnetic field communication technology is a wireless communication system technology usi...
Claims
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IPC IPC(8): H01Q1/52H01Q1/22H01Q1/24H01Q7/00
CPCH01Q1/526H01Q1/243H01Q1/2291H01Q7/00H04B5/263H04B5/79H04B5/43H04B5/72
Inventor CHOI, JI WOONGJANG, JAE EUNKIM, HAN JOONPARK, JIN HOOH, KYOUNG SUB
Owner DAEGU GYEONGBUK INST OF SCI & TECH